Traveling around big cities by taxi can cost a lot of money, but it's usually to take the underground train to most places.
—Would you please _______ so much noise? —Oh, sorry, I won’t.
Sam spends two hours _______ his homework every day.
—Do you like swimming? —Yes, swimming is a good way _______ fit.
—Would you like to climb mountains with me this Sunday? —I’d love to. But I _______ play table tennis against Class Three.
—What about this pink skirt,madam? —This one is really beautiful. I will buy it_________it's a little expensive.